Locking characteristics of synchronized oscillators in presence of interference

This correspondence begins with a critical review of the phenomenon of injection synchronization in an oscillator incorporating a low-
Q
tank circuit. A technique of improving the locking time of an injection synchronized oscillator (ISO) has been suggested. Also presented is a method of evaluating the locking range and locking time of an ISO in the presence of an interfering tone. The response of an ISO to an FM signal has been studied. Experimental results corroborating the theoretical findings have been given.